21840490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{312007}}^1$

素因数の和:312021

約数の個数: 16

約数和(自身を含む): 44929152

約数和(自身を除く): 23088662

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 312007, 624014, 1560035, 2184049, 3120070, 4368098, 10920245, 21840490]

約数ペア:

[(1, 21840490), (2, 10920245), (5, 4368098), (7, 3120070), (10, 2184049), (14, 1560035), (35, 624014), (70, 312007)]